Nguwuphi umahluko phakathi kwemitha yenqanaba le-ultrasonic kunye nemitha yenqanaba leradar?

Inqanaba lelinye leeparameters ekujoliswe kuzo ezibalulekileyo zokubeka iliso kwinkqubo yoshishino.Kwinqanaba eliqhubekayo lokulinganisa amatanki ahlukeneyo, iisilo, amachibi, njl., kunzima ukuba nezixhobo ezisemgangathweni ezinokuhlangabezana nazo zonke iimeko zokusebenza ngenxa yobuninzi beemeko zentsimi.

Phakathi kwabo, i-radar kunye ne-ultrasonic level gauges zisetyenziswa ngokubanzi kwizixhobo zokulinganisa ezingadibananga.Ke, yintoni umahluko phakathi kwemitha yenqanaba le-radar kunye nemitha yenqanaba le-ultrasonic?Uthini umgaqo wezi ntlobo zimbini zomlinganiselo?Ziziphi iingenelo zemitha yenqanaba le-radar kunye nemitha yezinga le-ultrasonic?

Okokuqala, imitha yenqanaba le-ultrasonic

Ngokuqhelekileyo sibiza i-wave yesandi ngokuphindaphindiweyo ngaphezu kwe-20kHz ultrasonic wave, i-ultrasonic wave luhlobo oluthile lwamaza omatshini, oko kukuthi, ukungcangcazela komatshini kwi-elastic medium kwinkqubo yokusasaza, ibonakaliswe ngamaza aphezulu, ubude obufutshane, obuncinci. I-diffraction phenomenon, kunye nokulungelelaniswa okulungileyo, kunokuba yiray kunye nokusasazwa kwesalathiso.

I-ultrasonic attenuation kwi-liquids kunye nezinto eziqinileyo zincinci kakhulu, ngoko ke amandla okungena anamandla, ngakumbi kwiindawo ezikhanyayo ezikhanyayo, i-ultrasonic inokungena amashumi eemitha ubude, idibene nokungcola okanye i-interfaces iya kuba nembonakalo ebalulekileyo, ukulinganisa inqanaba le-ultrasonic kukusetyenziswa kwayo. olu phawu.

Kwitekhnoloji yokufumanisa i-ultrasonic, kungakhathaliseki ukuba luhlobo luni lwesixhobo se-ultrasonic, kuyimfuneko ukuguqula amandla ombane kwi-ultrasonic emission, kwaye emva koko ufumane kwakhona kwiimpawu zombane, isixhobo sokugqiba lo msebenzi sibizwa ngokuba yi-ultrasonic transducer, eyaziwa ngokuba yi-probe.

Xa usebenza, i-ultrasonic transducer ibekwe ngaphezu kwento elinganisiweyo kwaye ikhupha i-ultrasonic wave ihla.I-wave ye-ultrasonic idlula kwi-air medium, ibonakaliswe emva xa idibana nomphezulu wento elinganisiweyo, kwaye ifunyenwe yi-transducer kwaye iguqulelwe kwisignali yombane.Emva kokubona lo mqondiso, inxalenye yokufumanisa i-elektroniki ijika ibe ngumqondiso wezinga lokubonisa kunye nemveliso.

Isibini, imitha yenqanaba lerada

Indlela yokusebenza yemitha yezinga le-radar iyafana neyomlinganiselo wezinga le-ultrasonic, kwaye i-radar level meter iphinda isebenzise ukudlulisa - ukubonakalisa - ukufumana imodi yokusebenza.Umahluko kukuba umlinganiselo wemitha yenqanaba le-radar ye-ultrasonic ikakhulu ixhomekeke kwi-transducer ye-ultrasonic, ngelixa i-radar level meter ixhomekeke kwi-high-frequency head kunye ne-antenna.

Iimitha zenqanaba le-Ultrasonic zisebenzisa amaza omatshini, ngelixa iimitha zenqanaba lerada zisebenzisa i-ultra-high frequencies (aliqela G ukuya kumashumi e-G Hertz) amaza ombane wombane.Amaza ombane ahamba ngesantya sokukhanya, kwaye ixesha lokuhamba linokuguqulwa libe ngumqondiso wenqanaba ngezinto zombane.

Enye imitha yenqanaba leradar eqhelekileyo yimitha yenqanaba leradar ekhokelwayo.

Imitha yenqanaba leradar ekhokelwayo yimitha yenqanaba leradar esekwe kumgaqo we-reflectometry wexesha (TDR).I-electromagnetic pulse ye-radar level meter isasazeka ecaleni kwentambo yentsimbi okanye iprobe ngesantya sokukhanya.Xa idibana nomphezulu we-medium medium, inxalenye ye-pulse ye-radar level meter ibonakaliswe ukwenza i-echo kwaye ibuyele kwisixhobo sokuqalisa i-pulse kwindlela efanayo.Umgama phakathi komthumeli kunye nomgangatho ophakathi olinganiselweyo ulingana nexesha lokusasazwa kwe-pulse apho ubude bezinga lolwelo kubalwa.

Okwesithathu, iingenelo kunye nokungonakali kwe-radar kunye ne-ultrasonic level meter

1. Ukuchaneka kwe-Ultrasonic akulunganga njenge-radar;

2. Ngenxa yobudlelwane phakathi kwe-frequency kunye nobukhulu be-antenna, imitha yezinga le-radar ene-frequency ephezulu incinci kwaye kulula ukuyifaka;

3. Ngenxa yokuba i-radar frequency iphezulu, ubude be-waveleng bufutshane, kwaye kukho umboniso ongcono kwiindawo eziqinileyo ezithe tye;

4. Umlinganiselo weRadar indawo eyimfama incinci kune-ultrasonic;

5. Ngenxa yesantya esiphezulu se-radar, i-radar beam Angle incinci, amandla agxininiswe, kwaye amandla e-echo aphuculwe ngelixa kulungele ukuphepha ukuphazamiseka;

6. Xa kuthelekiswa nemitha yezinga le-ultrasonic usebenzisa amaza omatshini, i-radar ayithinteki ngokusisiseko kwi-vacuum, umphunga wamanzi emoyeni, uthuli (ngaphandle kwegraphite, i-ferroalloy kunye nolunye uthuli oluphezulu lwe-dielectric), utshintsho lweqondo lokushisa kunye noxinzelelo;